Abstract:
PURPOSE:Four-dimensional CT (4D-CT) image data can be sorted into bins of each 10% of the respiratory cycle. From these data, an averaged scan (AS) and a maximum intensity projection (MIP) are derived. While sorting based on the respiratory cycle applies to lung tumours, the use of 4D-CT for the kidney has not been analysed. METHODS:Both kidneys from five patients were contoured from every phase of the 4D-CT, MIP and AS (in total 116 kidneys were contoured). For each patient, the kidney volumes on the AS and calculated mathematical average (CMA) from individual phases were compared. The kidney volumes on the MIP and Boolean expansion of all phases were compared. The maximum excursions of the superior and inferior poles of the kidneys were measured in the craniocaudal and anterior-posterior (AP) directions. Mid-kidney excursion was measured in the AP and medial-lateral directions. RESULTS:Mean difference between CMA and AS was -0.91 cm(3) (range -8.04 to 5.07 cm(3) ). Mean difference between Boolean and MIP was 18.92 cm(3) (range -2.24 to 44.34 cm(3) ). Mean maximum displacement of mid-kidney was 0.28 cm anteriorly (range 0 to 1.0 cm), 0.22 cm posteriorly (range 0.1 to 0.4 cm), 0.28 cm medially (range 0.1 to 0.5 cm) and 0.27 cm laterally (range 0.1 to 0.5 cm). Mean maximum excursion of superior pole was 0.31 cm anteriorly (range 0.2 to 0.5 cm), 0.29 cm posteriorly (range 0.2 to 0.5 cm) and 1.23 cm craniocaudally (range of 0.6 to 2.7 cm). Mean maximum excursion of inferior pole was 0.52 cm anteriorly (range 0.2 to 0.9 cm), 0.23 cm posteriorly (range 0.1 to 0.4 cm) and 0.67 cm craniocaudally (range of 0.3 to 1.8 cm). CONCLUSION:The current study using 4D-CT has shown that the derived MIP is a good surrogate for the evaluation of three-dimensional kidney displacement, and that the volume of the AS is not largely different from the average volume for individual phases. The 4D-CT is useful for the creation of individual patient internal target volume or planning organ at risk volume when kidney motion impacts on radiotherapy planning.
journal_name
J Med Imaging Radiat Oncoljournal_title
Journal of medical imaging and radiation oncologyauthors
Gawthrop JB,Gill Sdoi
10.1111/j.1754-9485.2012.02458.xsubject
Has Abstractpub_date
2012-12-01 00:00:00pages
689-95issue
6eissn
1754-9477issn
1754-9485journal_volume
56pub_type
杂志文章abstract::Giant cerebral aneurysms are associated with a poor prognosis, with 2-year survival rates reported as low as 20% (Sundt et al.; Syman et al.). Morbidity is largely associated with haemorrhage, local compressive effects and thrombosis. While endovascular coiling has been acknowledged as a safe treatment in small to med...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12267
更新日期:2015-02-01 00:00:00
abstract:INTRODUCTION:Interventional Radiology procedures can provoke anxiety and may be painful. Current practice, Radiologist Controlled Sedation (RCS), involves titrating aliquots of midazolam and fentanyl to patient response but underdosing and overdosing may occur. This study tests a new method of titrating sedation/analge...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,随机对照试验
doi:10.1111/1754-9485.12817
更新日期:2018-12-01 00:00:00
abstract:INTRODUCTION:Pulmonary embolism (PE) is the third most common cause of death from cardiovascular disease. Computed-tomographic pulmonary angiography (CTPA) is an accurate and safe test for diagnosing PE. The aim of this retrospective analysis was to evaluate the effects on image quality (IQ) of electrocardiogram (ECG) ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,随机对照试验
doi:10.1111/1754-9485.12147
更新日期:2014-01-01 00:00:00
abstract:INTRODUCTION:To assess laryngeal motion in early glottic cancer in order to determine safe margins for partial larynx volumetric modulated arc therapy (PL-VMAT), and to quantify dosimetric advantages of PL-VMAT. METHODS:This prospective study included T1-2N0 glottic cancers treated with whole larynx VMAT (WL-VMAT). Pr...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12612
更新日期:2017-10-01 00:00:00
abstract:INTRODUCTION:The goal of this initial clinical study was to test a new positron emission/tomography imager and biopsy system (PEM/PET) in a small group of selected subjects to assess its clinical imaging capabilities. Specifically, the main task of this study is to determine whether the new system can successfully be u...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2010.02230.x
更新日期:2011-02-01 00:00:00
abstract::CT perfusion is increasingly utilised in hyperacute stroke to facilitate diagnosis and patient selection for reperfusion therapies. This review article demonstrates eight examples of how CT perfusion can be used to diagnose stroke mimics and small volume infarcts, which can be easily missed on non-contrast CT, and to ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,评审
doi:10.1111/1754-9485.12422
更新日期:2016-04-01 00:00:00
abstract:INTRODUCTION:Marker clips are commonly deployed at the site of a percutaneous breast biopsy. Studies have shown that displacement of the clip from the site of deployment is not uncommon. The objective of this study was to determine how much 'migration' could be seen with fixed structures within the breast tissue across...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12327
更新日期:2015-10-01 00:00:00
abstract:INTRODUCTION:Long-term data from three randomized trials have demonstrated that adjuvant radiation therapy (ART) reduces the rate of biochemical failure in high-risk men following radical prostatectomy (RP). One of these trials has shown a survival advantage. We investigated the rate of ART in Victoria and the predicto...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12407
更新日期:2016-04-01 00:00:00
abstract:INTRODUCTION:To establish the optimal planning risk volume (PRV) of the lenses for patients who are receiving radiotherapy to the nasal cavity and paranasal sinus (NCPSC). METHODS:Geometrical uncertainties of the lenses were evaluated for a prospective group of patients (G1). Differences between planned and delivered ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12344
更新日期:2015-12-01 00:00:00
abstract::We present the results of a pilot study designed to investigate methods that may be applied to develop a patient position correction protocol for the post-prostatectomy patient receiving radiotherapy. Imaging was carried out with cone beam CT (CBCT) to investigate its suitability for detecting changes in rectal and bl...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2009.02057.x
更新日期:2009-04-01 00:00:00
abstract:INTRODUCTION:This paper outlines the key results of the Faculty of Radiation Oncology 2010 workforce survey and compares these results with earlier data. METHODS:The workforce survey was conducted in mid-2010 using a custom-designed 17-question survey. The overall response rate was 76%. RESULTS:The majority of radiat...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2011.02316.x
更新日期:2011-12-01 00:00:00
abstract::The aim of this study was to evaluate the prognostic value of metabolic tumour volume (MTV) and total lesion glycolysis (TLG) for small cell lung cancer (SCLC). MEDLINE, EMBASE and Cochrane Library databases were systematically searched. The pooled hazard ratio (HR) was used to measure the influence of MTV and TLG on ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,meta分析
doi:10.1111/1754-9485.12805
更新日期:2019-02-01 00:00:00
abstract::The persistent sciatic artery (PSA) is a rare arterial variant. Patients may present with a spectrum of atherosclerotic disease, but aneurysm formation with thromboembolic complications is more common. Although no intervention is required for asymptomatic individuals, stenting for stenosis, thrombolysis for occlusion ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12151
更新日期:2014-01-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to investigate the prognostic utility and reproducibility of a qualitative 5-point 18-fluorodeoxyglucose (FDG)-PET primary visual score (PVS) in patients with oesophageal and gastro-oesophageal junction (GOJ) cancer. METHODS:This was a retrospective review of patients with hi...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.13110
更新日期:2020-10-15 00:00:00
abstract:INTRODUCTION:This study aimed to evaluate the current use of imaging technologies for planning and delivery of radiotherapy (RT) in Australia. METHODS:An online survey was emailed to all Australian RT centres in August 2015. The survey inquired about imaging practices during planning and treatment delivery processes. ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12556
更新日期:2017-06-01 00:00:00
abstract::Adenomyomatosis is a relatively common abnormality of the gall bladder, with a reported incidence of between 2.8 and 5%. Although mainly confined to the adult study group, a number of cases have been reported in the paediatric study group. It is characterized pathologically by excessive proliferation of the surface ep...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,评审
doi:10.1111/j.1440-1673.2008.01926.x
更新日期:2008-04-01 00:00:00
abstract::This study aimed to describe the radiotherapy (RT) management and subsequent outcome in a cohort of patients with newly diagnosed glioma. Treatment details were obtained via a questionnaire completed by neurosurgeons, radiation and medical oncologists who treated patients diagnosed with glioma in Victoria during 1998-...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2009.02072.x
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:There is limited long-term prospective data on the use of endovascular techniques and the use of thrombolysis in malfunctioning autologous haemodialysis fistulas. PURPOSE:Prospective assessment of clinical outcomes following angioplasty with or without low-dose thrombolysis was undertaken in patients who pr...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2010.02216.x
更新日期:2010-12-01 00:00:00
abstract:INTRODUCTION:Having previously modelled the optimal proportion of uterine cervix and corpus cancers that should be treated with brachytherapy (BT), we aimed to complete the assessment of the role of BT for gynaecological cancers by estimating the optimal proportion of vaginal cancer cases that should be treated with BT...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2012.02392.x
更新日期:2012-08-01 00:00:00
abstract:INTRODUCTION:This study was performed to evaluate the diagnostic performance of multi-slice CT angiography combined with enterography in determining the cause and location of obstruction as well as intestinal ischaemia in patients with small bowel obstruction (SBO). METHODS:This study retrospectively summarized the im...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12514
更新日期:2017-02-01 00:00:00
abstract::Patients with colorectal cancer undergo frequent diagnostic imaging to stage the extent of metastatic disease and assess response to treatment. Imaging is typically via diagnostic contrast-enhanced CT or combined FDG-PET/CT. However, recent research has demonstrated promising benefits of combined FDG-PET/MRI in oncolo...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,评审
doi:10.1111/1754-9485.12936
更新日期:2019-10-01 00:00:00
abstract::Obesity is rapidly becoming one of the major challenges for health care systems. Surgery has proved to be one of the most effective methods of helping patients to achieve sustainable weight loss. Laparoscopic sleeve gastrectomy is a relatively new bariatric surgical technique. A staple line is placed in a line paralle...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2012.02401.x
更新日期:2012-08-01 00:00:00
abstract::In New South Wales (NSW) from 1996 to 2006, only 34-37% of newly diagnosed cancer patients were treated with radiotherapy instead of the 50% proposed by NSW Health in Radiotherapy Plans released in 1991, 1995 and 2003. As a consequence, over 50 000 cancer patients were not treated and has resulted in the estimated pre...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2009.02098.x
更新日期:2009-08-01 00:00:00
abstract:INTRODUCTION:This study aims to determine the diagnostic accuracy of Primovist-enhanced MRI in the detection of hepatocellular carcinoma (HCC) in cirrhosis, using liver explant histopathology correlation. METHODS:Thirty patients underwent a Primovist-enhanced MRI prior to liver transplantation for cirrhosis at the Pri...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12038
更新日期:2013-06-01 00:00:00
abstract:INTRODUCTION:Since its onset in the spring of 2009, the H1N1 pandemic has kept health-care professionals busy worldwide. Even though it often causes respiratory tract illness, reports describing the radiological manifestations in infected children are few. The purpose of this study was twofold: to review the chest radi...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2011.02264.x
更新日期:2011-06-01 00:00:00
abstract:INTRODUCTION:Spinal tuberculosis (TB) accounts for 50% or more of skeletal tuberculosis. MRI is a helpful tool for spinal TB. MR findings in spinal TB however, may have several different patterns. METHODS:The MRI features of spinal TB and classification as usual and unusual findings are reported. The MR images in 52 p...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12157
更新日期:2014-01-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to evaluate the dynamic volumetric CT in the assessment of the paediatric airway. METHODS:Ethics board approval was obtained for this retrospective review. Eight infants (median age 6 months, range 3 weeks to 1 year, 50% female) at a tertiary paediatric centre with complex clinic...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12009
更新日期:2013-04-01 00:00:00
abstract::Many artefacts can mimic pulmonary emboli (PE) on CT pulmonary angiography (CTPA), most commonly in the peripheral pulmonary arteries (PA's). We describe flow-related artefact mimicking PE in the central PA's of two patients, both with pulmonary arterial hypertension (PAH). To our knowledge, this is the first report o...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/1754-9485.12893
更新日期:2019-08-01 00:00:00
abstract::Proscription of antiperspirant or deodorant use during adjuvant breast radiotherapy is common. The investigators were seeking an information base to facilitate design of an appropriate controlled trial of the use of deodorants during radiotherapy. The first component consisted of a survey of women after adjuvant breas...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章,评审
doi:10.1111/j.1754-9485.2009.02125.x
更新日期:2009-12-01 00:00:00
abstract::This study aims to evaluate medical student and intern awareness of ionising radiation exposure from common diagnostic imaging procedures and to suggest how education could be improved. Fourth to sixth year medical students enrolled at a Western Australian university and interns from three teaching hospitals in Perth ...
journal_title:Journal of medical imaging and radiation oncology
pub_type: 杂志文章
doi:10.1111/j.1754-9485.2010.02132.x
更新日期:2010-02-01 00:00:00